
CHAPTER
1-1
Cisco Catalyst 4000 Access Gateway Module Installation and Configuration Note
OL-3008-01
1
Overview
This chapter provides an overview of the Cisco Catalyst 4000 Access Gateway Module (AGM) and
describes its applications, features, and supported modules.
This chapter contains these major sections:
• AGM Features, page 1-1
• Hardware Features, page 1-4
• Software Features, page 1-8
AGM Features
The AGM provides integrated telephony and routing capabilities for the Catalyst 4000 family switches
with the following system features:
• Voice gateway to the Public Switched Telephone Network (PSTN) with a choice of digital (T1, E1,
ISDN Primary Rate Interface (PRI), Basic Rate Interface (BRI) or analog foreign exchange office
(FXO)) interfaces. These interfaces can be used to connect to a variety of PBX/PABXs.
• Analog voice gateway with foreign exchange station (FXS) interfaces for fax machines,
speakerphones, modems, and analog phones.
• Advanced telephony services, including voice conferencing and transcoding for analog phones, IP
phones, and Cisco Survivable Remote Site Telephony (SRS Telephony) for robust and resilient call
control.
• Cisco IOS routing, including support for IP, IPv6, IPX, and System Network Architecture (SNA),
WCCPv2, and NAT.
• Secure IP WAN connectivity with firewall, intrusion detection, and hardware-based encryption.
• Centralized IP Telephony features through Cisco CallManager, with features to Enterprise branch
offices via Cisco Survivable Remote Site Telephony (SRS Telephony) and IOS Telephony Services
(ITS).
AGM Applications
The AGM is typically used in IP telephony campus and large branch office applications. These
applications are described in this section.
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